/**

 * Alt2XML

 * Copyright © 2014 František Kučera (frantovo.cz)

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program. If not, see <http://www.gnu.org/licenses/>.

 */

package cz.frantovo.alt2xml.out.xpath;

import javax.xml.namespace.QName;

import javax.xml.xpath.XPathVariableResolver;

/**

 *

 * @author Ing. František Kučera (frantovo.cz)

 */

public class CompoundVariableResolver implements XPathVariableResolver {

	private final XPathVariableResolver[] resolvers;

	public CompoundVariableResolver(XPathVariableResolver... resolvers) {

		this.resolvers = resolvers;

	}

	@Override

	public Object resolveVariable(QName variableName) {

		for (XPathVariableResolver r : resolvers) {

			Object value = r.resolveVariable(variableName);

			if (value != null) {

				return value;

			}

		}

		return null;

	}

}